EP2159496A1 - Steuerung für Energieversorgungssysteme - Google Patents

Steuerung für Energieversorgungssysteme Download PDF

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Publication number
EP2159496A1
EP2159496A1 EP08172941A EP08172941A EP2159496A1 EP 2159496 A1 EP2159496 A1 EP 2159496A1 EP 08172941 A EP08172941 A EP 08172941A EP 08172941 A EP08172941 A EP 08172941A EP 2159496 A1 EP2159496 A1 EP 2159496A1
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EP
European Patent Office
Prior art keywords
energy
storage unit
energy storage
flux
time frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08172941A
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English (en)
French (fr)
Inventor
Fjo De Ridder
Hans Hoes
Johan Van Bael
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Vito NV
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Vito NV
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Filing date
Publication date
Application filed by Vito NV filed Critical Vito NV
Priority to EP08172941A priority Critical patent/EP2159496A1/de
Priority to CN200980134282.1A priority patent/CN102272528B/zh
Priority to US13/061,223 priority patent/US9618215B2/en
Priority to JP2011524332A priority patent/JP2012500960A/ja
Priority to EP09782067.4A priority patent/EP2321583B1/de
Priority to CA2734429A priority patent/CA2734429C/en
Priority to DK09782067.4T priority patent/DK2321583T3/en
Priority to PCT/EP2009/060815 priority patent/WO2010023159A2/en
Publication of EP2159496A1 publication Critical patent/EP2159496A1/de
Priority to JP2014076768A priority patent/JP6215753B2/ja
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1048—Counting of energy consumption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F28D20/0043—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material specially adapted for long-term heat storage; Underground tanks; Floating reservoirs; Pools; Ponds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0052—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/028—Control arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T2201/00—Prediction; Simulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention is related to methods of and devices for operating and controlling energy supply systems, in particular systems which comprise an energy storage unit and an energy production unit.
  • Energy storage units may store some form of energy for subsequent release. They may store, e.g. thermal, mechanical, chemical, gravitational or electrical energy. They can be, for example, batteries; alternatively they may store e.g. thermal energy and be, for example, thermal energy storage systems based on phase change materials or underground thermal energy storage systems.
  • Energy production units may use, for example, fossil fuels, electricity, or renewable energy sources (e.g. solar energy, wind, water, environmental heat or cold captured in building rooms) to produce energy.
  • energy production units are: gas heater for a building or diesel engine for a vehicle.
  • Such energy supply systems combining the energy released by an energy storage unit and the energy directly produced by an energy production unit may be used, for example, for running a vehicle and for heating and/or cooling buildings.
  • thermal energy storage systems may comprise a medium for storing thermal energy, which can store the thermal energy for a defined time period.
  • the thermal energy may be heat and/or cold.
  • a particular application is formed by underground thermal energy storage systems (UTESS), which comprise a large underground volume that may store a huge amount of thermal energy. If such a system is loaded with excess heat during summer and with cold during winter, it may be capable of air conditioning a building year round. In essence it may shift the cold and heat between the seasons.
  • UTESS underground thermal energy storage systems
  • An underground storage field may for example comprise about one hundred boreholes, drilled in a square or circular mesh. Each borehole may be about 120 m deep. Each borehole may comprise a loop circuit for a liquid, which acts as carrier of thermal energy (e.g. water). The borehole may further be filled with a grouting material (e.g. bentonite) having a good thermal conductivity. Each borehole hence may form an underground heat exchanger between the carrier liquid and the underground material.
  • a grouting material e.g. bentonite
  • Underground thermal energy storage systems may be used for heating and cooling of buildings, particularly large office buildings.
  • a heat pump may extract heat from the field and warm it up to approximately 40°C at low energy costs and high energy efficiency.
  • the low temperature of the underground field may be used for cooling purposes.
  • Underground thermal energy storage systems may reduce the cost of heating and cooling of such buildings and may furthermore help in reducing carbon dioxide emissions.
  • Underground thermal energy storage systems may mostly complement the classical heating and air conditioning systems (such as gas heating and electrical cooling), which are, in this embodiment, the energy production units, so as to reduce the operational cost of air conditioning.
  • classical heating and air conditioning systems such as gas heating and electrical cooling
  • the thermal energy stored in such underground fields is finite. Therefore, measures have to be taken in order to avoid exhausting the underground field, so as to allow smooth operation the whole year round. If the underground field temperature becomes higher than a predetermined temperature, for example 12°C, it may be too warm for cooling a building. Similarly, supplying heat may become more expensive if temperature of the underground field drops beneath a predetermined temperature, for example 0°C.
  • Patent application JP 2006-292310 discloses an underground thermal energy storage system wherein limit values of the temperature of the underground field are set such that the underground temperature can be prevented from becoming too high or too low so as to disable the operation. When the limit value of the field temperature is attained, the operation is suspended in order to allow recovery.
  • the classical heating/air conditioning (HAC) equipment has to supply the full thermal energy for air conditioning the building. This leads to an increased economical cost of operation.
  • the classical HAC equipment has to be designed in order to be able to supply the whole amount of thermal energy demand, resulting in large and expensive systems.
  • batteries may store energy that can be converted into electric energy. They may be used in combination with, for example, fossil fuel motor such as a petrol or diesel or biodiesel engine, i.e. an energy production unit as herein defined, for example in a car.
  • fossil fuel motor such as a petrol or diesel or biodiesel engine
  • an energy production unit as herein defined, for example in a car.
  • the engine needs to be designed in order to ensure the whole amount of energy required by the car to end the journey, resulting in powerful and expensive engines.
  • the present invention aims to provide methods of and devices for controlling energy supply systems that overcome drawbacks of prior art methods and devices.
  • one aim of the invention is to provide such methods and devices which guarantee continuous operation of the energy storage units.
  • An additional or alternative aim of the invention is to provide methods of and devices for operating energy supplying systems that reduce the overall operational cost.
  • Another additional or alternative aim of the invention is to provide methods of and devices for controlling energy supply systems that allow to design more compact energy supply systems.
  • At least one aim of the invention is met by providing methods of operating energy supply systems as set out in the appended claims.
  • Control methods according to the invention advantageously allow to estimate or calculate an operational cost of the energy storage unit, under given control conditions, for example the energy that can be supplied by the unit and the energy that is demanded externally from the system.
  • the operational cost may be calculated for all possible values of the above or other parameters in advance.
  • the calculated parameters may be stored in an array in a device implementing methods of the invention.
  • another condition may lie in the optimal range of temperatures in which the system may work.
  • methods of the invention allow to operate an energy supply system so as to guarantee that at any instant a predetermined (nonzero) amount of energy can be supplied by the storage unit.
  • the energy storage unit is an underground thermal energy storage system.
  • Figure 1 represents in the uppermost plot synthetic data and model values for an example. In the lower plot, the prediction error is shown.
  • Figure 2 represents an example of a dynamic programming algorithm.
  • Figure 3 represents a simulated evolution of the cost function.
  • Figure 4 represents a simulated control law for a week in February. White indicates constraints are violated.
  • Figure 5 represents a simulated evolution of the thermal energy flux supplied by an underground thermal energy storage system when a control method of the invention is implemented.
  • the invention is in general related to all kinds of systems for energy supply including an energy storage unit and an energy production unit.
  • energy storage units include thermal energy storage systems in cars, such as for maintaining the car engine cooling fluid within a desired temperature range (e.g. for car engines that frequently make a start/stop), in computers for the cooling of microprocessors, in tooling machines;
  • Other examples of energy storage units include batteries, such as a battery in a car which may be charged, for example, by a dynamo on braking or for pump storage schemes in combination with power stations such as nuclear power stations.
  • Various types of energy storage systems and methods e.g. thermal, mechanical, chemical or electrical energy storage methods and systems, are included within the scope of the invention.
  • the present invention will be exemplified with reference to underground thermal energy storage systems and one particular embodiment of the present invention is in underground thermal energy storage systems.
  • the invention is not limited thereto. Preferred embodiments of this aspect of the invention are described hereinafter in the field of underground thermal energy storage systems.
  • a global HAC system of a building may comprise two blocks: firstly, as energy production unit, a classical heating/cooling installation, comprising a gas fired boiler and an electricity consuming chiller, and secondly, as energy storage unit, an underground thermal energy storage system, comprising an underground field, coupled to a heat exchanger and heat pump.
  • a typical underground storage field may be designed so that a predetermined amount of thermal energy (heat/cold) can be delivered during each season. However, this may only be guaranteed if no temperature bounds are ever trespassed. So, a first property of control methods/devices of the invention may be to keep the field within a given temperature range.
  • the temperature range may vary in function of time (week, month, season, etc.)
  • Control methods and devices according to the invention thus preferably allow to install an HAC installation comprising a smaller underground field and a smaller classical installation compared to the prior art. Still, they may guarantee to supply the required heat and cold.
  • control methods/devices of the invention may extract heat or cold from the field, even if this is not demanded by the building.
  • such an operation strategy may be the economically most efficient way of heating/cooling.
  • a model for the underground is selected.
  • This model enables the prediction of underground temperature changes due to a given operation strategy.
  • Both unknown parameters can be estimated starting from synthetic data generated by a simulation of the underground system (e.g. in TRNSYS).
  • a model for the underground to optimize the parameters mc and ⁇ the Duct Ground Heat Storage Model can be used. The results are visualized in figure 1 .
  • the sinusoidal structure in the error is due to simplification of the model and can further be reduced by increasing the model complexity, e.g. by introducing second order effects.
  • the root-mean-square value of the prediction error is only 0.0485°C with maximum deviation of 0.0857°C, it may be concluded that this simple model is sufficiently good for implementation in a controller/control method.
  • the error is positive during winter and negative during summer. This means that the real temperature is higher in winter and lower in summer. Consequently, a control method/device would act more prudent than strictly necessary.
  • a first constraint can concern the pumps used to circulate the carrier liquid through the underground storage system.
  • a second set of constraints bounds the temperature of the field.
  • the space between the ground and the pipes is filled with grouting material, which is a good heat conductor.
  • the temperature of the underground field should preferably not fall below freezing point (0°C).
  • the upper limit falls in the range between 10°C and 15°C.
  • a rather simple function has been used. A time frame of one year is selected. The time frame is divided in a winter and a summer season. During winter, defined as the period from October 1 st to March 31 st , the underground system should be able to deliver continuously 200 kW heat, if desired.
  • the underground system should be capable of supplying the same amount of cold, if desired.
  • Model and constraints as identified above can be implemented in a dynamic programming algorithm.
  • the dynamic programming algorithm subdivides all variables: the time is subdivided so that the controller is evaluated at predetermined time instants (steps), e.g. once a week; the demand and delivered heat/cold are divided e.g. in 11 steps between -343 and 343 kW and the temperature is divided e.g. in 105 steps between 0 and 12°C.
  • the algorithm comprises three blocks, which are recursively repeated.
  • a terminal cost function is defined. This function can be regarded as an initialisation of the algorithm and couples a cost to every temperature.
  • the terminal cost function is shown at the right side of figure 2 for the time period number N.
  • the terminal cost function assigns a cost to each value related to the energy stored, e.g. temperature at the terminal or last time point of a cycle.
  • a new cost function at each previous time interval, e.g. N-1, N-2 etc.
  • the algorithm selects the optimal heat flux u * for every value related to the energy stored, e.g.
  • the implemented control method ends the last day of winter.
  • an aim of the terminal cost function is to associate a cost to each temperature on that (final) day. This can be done in two steps. First an initial guess is made; next, the algorithm is iterated over several years to converge to a better terminal cost function. In order to find an initial guess, it can be argued that in the upcoming summer, the field is used to supply cold. For that reason, it would be beneficial if the ground is as cold as possible.
  • the initial terminal cost function can simply be proportional to the final temperature x N , E initial x N ⁇ x N . In order to minimize the error in the control law due to this simplification of the terminal cost function, the dynamic programming algorithm can be run over several years.
  • stage cost L can be calculated.
  • the time frame is subdivided in steps of one week.
  • the stage or cost-to-go function tells us the cost if the system is operated under a given control condition.
  • This stage or cost-to-go function itself is function of the temperature of the field and of the selected operation conditions: demanded and supplied heat/cold, respectively q and u .
  • An overview of a cost-to-go function is given in table 1. Table 1: stage cost or cost-to-go function.
  • the cost consists of two terms: that part which is not supplied by the field has to be produced by the classical installation, e.g. a boiler.
  • the gas price k K we take the gas price k K , and the efficiency ⁇ K into account.
  • the x k * x ⁇ q refers to the control policy.
  • figure 3 a simulated evolution of the cost function as function of time and temperature is shown. To interpret this figure, start at the line on the left top corresponding to month April. This line is the expected cost needed to air condition the office building until April next year. If the underground field is warmer than 4°C no cost function is shown, because for such high temperatures, the field cannot guarantee that it can deliver 200 kW cold all summer long. The next month the temperature range has shifted to higher temperatures. The reason for this is that if the temperature would be too close to zero, the field cannot guarantee to deliver 200 kW heat in the approaching winter. By the end of summer the temperature has risen above 10°C, ready to supply heat during the winter. During the winter season the opposite is true: the field is cooling down.
  • Figure 3 indicates the expected terminal cost for operation to April of the next year. As can be seen, during the winter seasons, highest decrease in terminal cost can be expected.
  • a simulated control policy is shown in figure 4 .
  • the aim can be to cool down the field in order to provide cooling during summer.
  • the field should preferably provide the demanded heating with a maximum of 200 kW.
  • seven regions can be identified, as discussed hereinafter.
  • the selected control parameter (thermal energy flux supplied) is shown for a typical week in every month of a year.
  • the system is mostly forced to heat up by extracting cold if the temperature is too low. This is most pronounced in spring, where one can see the large vertical blue bands in figure 5 . Only when the field is too warm, heat is extracted, but this is rather rare. Towards the end of summer, the field is relatively warm and mostly the demanded heat is supplied. In winter, the opposite scenario takes place: the field is forced to cool down by extracting heat.
  • a succession of the control parameter may guarantee that the temperature remains in its desired range all year long.
  • the optimal amount of energy extracted from or supplied to the field may vary slightly.
  • At any time during summer at least 200 kW cold is supplied if demanded and during winter 200 kW heat can be delivered. Under these operating conditions it is impossible that the underground field temperature may fall below 0°C or heat above 12 °C. Above all, the heating and cooling may be partitioned between a classical installation and an underground storage field, so that the total cost may be minimized.
  • control methods/devices of the invention may be complemented with a measurement method/device for measuring the (average) temperature of the field. This may be measured by inserting a temperature sensor in the ground at several distances from the boreholes. The average value of the sensors may probably be a good measure for this parameter.
  • An alternative may be utilizing the carrier liquid temperature after a shut down for one or two days. Often office buildings are not used during the weekend and after such a period the carrier liquid temperature may be quite close to the mean field temperature.
  • An advantage of the dynamic programming approach according to the invention is that the final outcome is a large array, which may easily be stored in a small computer, which may be already present to apply the current, classical, control policy. Model predictive control algorithms, which could result in similar controllers would need a more powerful computer to estimate the optimal control value for the system.
  • An energy supply system for a car may comprise two blocks: firstly, as energy production unit, a petrol engine, and secondly, as energy storage unit, a battery.
  • a model and constraints may be here defined and implemented into a dynamic programming algorithm.
  • the model describes the battery functioning and may take account inter alia its capacity, and the amount of energy it can release to the system per time unit.
  • Constraints may include, for example, the battery capacitance, the time needed to charge the battery, the speed at which the battery can release the stored energy to the system; the additional constraint that a certain amount of energy should be guaranteed during the whole car journey, may be taken into account.
  • the algorithm may comprise three blocks, which may be recursively repeated.
  • the terminal cost function initialises the algorithm and couples a cost to, for example, each voltage of the battery.
  • the voltage of the battery may be an indication of the energy contained within the energy storage unit i.e. the battery.
  • the control device may be coupled to a GPS system where any journey may be predetermined or a recurring journey, for example a home-work-home daily itinerary may be stored. This may determine the time frame.
  • the algorithm may select the optimal energy flux for every possible voltage of the last similar journey, i.e. that flux which leads to the lowest cost.
  • these optimal costs for every voltage may result in a new cost function, which can be used to find the optimal control parameters for the previous and future voltages.
  • a further constraint may be placed upon the system.
  • the battery should be able to deliver a certain amount of energy as a minimum at any time. This would be required to accelerate from standstill across a road junction, overtake a vehicle or carry out an emergency action.
  • This constraint is analogous to the constraint on the heat storage system to be able to deliver a minimum energy at any time.
  • Control methods and devices according to the invention may thus allow installation in the car an energy supply system comprising a smaller petrol engine than would otherwise be required. They may nevertheless guarantee supply of the required or desired amount of energy.
  • a further embodiment of the present invention relates to a pump storage system combined with one or more power stations.
  • the power station is a nuclear power station, its power output can only be changed slowly.
  • a pumped water storage scheme can drive a turbine to generate the necessary electricity.
  • the upper reservoir should be depleted almost fully so that at low power usage at night the unused power from the nuclear power stations can be used to pump the water to the higher reservoir using lower cost night tariff electricity.
  • a further constraint may be placed upon the system.
  • the pump storage system should be able to deliver a certain amount of energy as a minimum at any time as the nuclear power stations cannot react quickly. If this emergency power is not available there is a danger that the phase timing of the AC power will go out of synchronisation and generators will drop out in a domino effect.
  • This constraint is analogous to the constraint on the heat storage system to be able to deliver a minimum energy at any time. Control methods and devices according to the invention may thus allow use with a pump storage energy supply system comprising a pump storage scheme that can guarantee supply of the required or desired amount of energy at an optimum cost while maintaining security requirements.
EP08172941A 2008-08-29 2008-12-24 Steuerung für Energieversorgungssysteme Withdrawn EP2159496A1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP08172941A EP2159496A1 (de) 2008-08-29 2008-12-24 Steuerung für Energieversorgungssysteme
CN200980134282.1A CN102272528B (zh) 2008-08-29 2009-08-21 供能系统的控制器
US13/061,223 US9618215B2 (en) 2008-08-29 2009-08-21 Controller for energy supply systems
JP2011524332A JP2012500960A (ja) 2008-08-29 2009-08-21 エネルギー供給システムのためのコントローラ
EP09782067.4A EP2321583B1 (de) 2008-08-29 2009-08-21 Steuerung für energieversorgungssysteme
CA2734429A CA2734429C (en) 2008-08-29 2009-08-21 Controller for energy supply systems
DK09782067.4T DK2321583T3 (en) 2008-08-29 2009-08-21 CONTROL UNIT FOR ENERGY SUPPLY SYSTEMS
PCT/EP2009/060815 WO2010023159A2 (en) 2008-08-29 2009-08-21 Controller for energy supply systems
JP2014076768A JP6215753B2 (ja) 2008-08-29 2014-04-03 エネルギー供給システムを運転する方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08163352 2008-08-29
EP08172941A EP2159496A1 (de) 2008-08-29 2008-12-24 Steuerung für Energieversorgungssysteme

Publications (1)

Publication Number Publication Date
EP2159496A1 true EP2159496A1 (de) 2010-03-03

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EP08172941A Withdrawn EP2159496A1 (de) 2008-08-29 2008-12-24 Steuerung für Energieversorgungssysteme
EP09782067.4A Active EP2321583B1 (de) 2008-08-29 2009-08-21 Steuerung für energieversorgungssysteme

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EP09782067.4A Active EP2321583B1 (de) 2008-08-29 2009-08-21 Steuerung für energieversorgungssysteme

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US (1) US9618215B2 (de)
EP (2) EP2159496A1 (de)
JP (2) JP2012500960A (de)
CN (1) CN102272528B (de)
CA (1) CA2734429C (de)
DK (1) DK2321583T3 (de)
WO (1) WO2010023159A2 (de)

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EP2299189B1 (de) * 2009-09-10 2014-07-23 Vito Optimierte Steuerung eines Energieversorgungssystems oder eines Energieverbrauchssystems
US8793292B1 (en) 2009-10-23 2014-07-29 Lockheed Martin Corporation System and method for computer simulations
JP5400102B2 (ja) * 2010-08-10 2014-01-29 学校法人 芝浦工業大学 暖房機の制御方法、及び、暖房機
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JP6590206B2 (ja) * 2015-11-26 2019-10-16 清水建設株式会社 地熱利用空調方法
US11404875B2 (en) 2017-02-08 2022-08-02 Battelle Energy Alliance, Llc Energy management system, method of controlling one or more energy storage devices and control unit for one or more power storage units
CN111457463A (zh) * 2020-03-03 2020-07-28 天津大学 一种停电不停暖的蓄热式电采暖优化控制方法
CN112016218B (zh) * 2020-09-24 2022-07-22 哈尔滨电气动力装备有限公司 核主泵惰转模型的建模方法及应用

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CN102272528B (zh) 2015-06-10
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CA2734429C (en) 2017-10-31
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US9618215B2 (en) 2017-04-11
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WO2010023159A3 (en) 2011-04-21
US20110166718A1 (en) 2011-07-07

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